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Cell timeline
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1665
Cell first observed
Robert Hooke, an English scientist, discovered a honeycomb-like
structure in a cork slice using a primitive compound microscope. He
only saw cell walls as this was dead tissue. He coined the term "cell" for
these individual compartments he saw.
1670
First living cells seen
Anton van Leeuwenhoek, a Dutch biologist, looks at pond water with a
microscope he made lenses for.
1683
Miniature animals
Anton van Leeuwenhoek made several more discoveries on a
microscopic level, eventually publishing a letter to the Royal Society in
which he included detailed drawings of what he saw. Among these was
the first protozoa and bacteria discovered.
1833
The center of the cell seen
Robert Brown, an English botanist, discovered the nucleus in plant cells.
1838
Basic building blocks
Matthias Jakob Schleiden, a German botanist, proposes that all plant
tissues are composed of cells, and that cells are the basic building
blocks of all plants. This statement was the first generalized statement
about cells.
1839
Cell theory
Theodor Schwann, a German botanist reached the conclusion that not
only plants, but animal tissue as well is composed of cells. This ended
debates that plants and animals were fundamentally different in
structure. He also pulled together and organized previous statement on
cells into one theory, which states: 1 - Cells are organisms and all
organisms consist of one or more cells 2 - The cell is the basic unit of
structure for all organisms
1840
Where does life come from
Albrecht von Roelliker discovers that sperm and eggs are also
cells.
1845
Basic unit of life
Carl Heinrich Braun reworks the cell theory, calling cells the basic unit
of life.
1855
3rd part to the cell theory added
Rudolf Virchow, a German physiologist/physician/pathologist added the
3rd part to the cell theory. The original is Greek, and states Omnis
cellula e cellula. This translates as all cells develop only from existing
cells. Virchow was also the first to propose that diseased cells come
from healthy cells.
1862
Louis Pasteur came up with a process to prevent milk and wine from
making people sick (Pasteurization) which was based off his work in
germ theory. He had proven spontaneous generation false and
replaced it biogenesis which states that all living things came from
preexisting life. Biogenesis is the basis or Germ Theory which, though
not originally his idea, led Pasteur to discover vaccines for Rabies and
Anthrax as well as other medical accomplishments.
1898
Camillo Golgi discovers the Golgi apparatus
How: Golgi invented a method of staining by hardening nervous cells in
potassium bichromate and then impregnating the sample with silver
nitrate. The resultant reaction, known as the black reaction allowed
him to see the Golgi apparatus under the microscope.